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A257257 as a simple table

na(n)
12
22
36
42
56
614
72
86
916
1024
112
126
1314
1428
1544
162
176
1816
1926
2048
2160
222
236
2414
2528
2648
2760
2884
292
306
3116
3224
3352
3464
3586
36122
372
386
3914
4026
4148
4266
4394
44126
45142
462
476
4816
4928
5048
5162
5286
53132
54144
55176
562
576
5814
5926
6044
6160
6294
63120
64146
65166
66216
672
686
6916
7024
7148
7264
7386
74132
75142
76180
77234
78252

[2,2,6,2,6,14,2,6,16,24,2,6,14,28,44,2,6,16,26,48,
 60,2,6,14,28,48,60,84,2,6,16,24,52,64,86,122,2,6,
 14,26,48,66,94,126,142,2,6,16,28,48,62,86,132,144,
 176,2,6,14,26,44,60,94,120,146,166,216,2,6,16,24,
 48,64,86,132,142,180,234,252]